head to head
Neither is meaningfully harder - they pose close to the same test. The widest gap is reads, and it is a single point.

Execution · Practiced Mastery
A basketball sim testing shot timing and tactical play against opponents.

Execution · Practiced Mastery
Planning approaches with recon tools, then executing them under lethal fire.
NBA 2K3 leans Execution (Practiced Mastery); Tom Clancy's Ghost Recon Advanced Warfighter leans Execution (Practiced Mastery).
Same score on execution - which means the number cannot separate them. The difference is in what each one asks of you.
NBA 2K3
Shooting and dribble timing decide plays
Tom Clancy's Ghost Recon Advanced Warfighter
Lethal firefights punish sloppy aim and exposure
NBA 2K3 leans a little harder on reads, though the gap is small.
NBA 2K3
Human opponents reward reading offense and defense
Tom Clancy's Ghost Recon Advanced Warfighter
Multiplayer squads outflank and adapt to your habits
NBA 2K3 leans a little harder on variance, though the gap is small.
NBA 2K3
Shot success carries randomness
Tom Clancy's Ghost Recon Advanced Warfighter
Enemy placements are scripted-but-unknown on first attempt
Same score on optimization - which means the number cannot separate them. The difference is in what each one asks of you.
NBA 2K3
Playcalling, rotations, and team management reward planning
Tom Clancy's Ghost Recon Advanced Warfighter
Drone recon, squad orders and approach planning decide missions
A matching score does not mean a matching test. Two games can both sit at 10 on execution and demand completely different things of you - which is why the reasoning above matters more than the number beside it.